EP1210248A1 - Device and method for automatically adapting a light sensor to a windscreen - Google Patents
Device and method for automatically adapting a light sensor to a windscreenInfo
- Publication number
- EP1210248A1 EP1210248A1 EP01949479A EP01949479A EP1210248A1 EP 1210248 A1 EP1210248 A1 EP 1210248A1 EP 01949479 A EP01949479 A EP 01949479A EP 01949479 A EP01949479 A EP 01949479A EP 1210248 A1 EP1210248 A1 EP 1210248A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radiation
- windshield
- light
- receiver
- motor vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
- B60Q1/1415—Dimming circuits
- B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
Definitions
- the invention relates to a device and a method for automatically adapting a light sensor system, which is assigned to an automatic control device for switching on and off lighting devices of a motor vehicle and is arranged in the region of the windshield of the motor vehicle, to the light transmission properties of the windshield.
- a control device of the type in question is known from DE 19523 262 A1.
- This control device is assigned a light sensor system which has an ambient light sensor for the non-directional detection of the general lighting conditions (brightness) in the surroundings of the motor vehicle and a directional sensor which detects the lighting conditions in the direction of travel in front of the vehicle.
- the light sensor system is connected to an electronic evaluation device which, taking into account the signals from both sensors and the current switching state of the lighting devices, determines whether a change in their switching state is necessary.
- the light sensor system assigned to the control device is located behind the windshield approximately in the area of the mirror base of the rearview mirror.
- this position allows only a little through the vehicle itself impaired detection of the ambient brightness, on the other hand it is almost ideal for measuring the direction-specific brightness in the direction of travel.
- a disadvantage of this position is that the radiation received by the individual sensors must first pass through the windshield and its characteristics may be changed there. This is particularly the case in automotive engineering. Thermal insulation glass is increasingly being used, which changes the spectral composition of the light due to absorption or reflection of infrared radiation into the visible spectral range, or when using so-called color wedges in the upper pane, which have a strong filter effect in the visible spectral range ,
- the present invention is therefore based on the object of providing a device and a method which enable an automatic adaptation of such a control device or, in particular, of the light sensor system associated therewith to the light transmission properties of the respective windshield.
- this object is achieved by an object having the features of the main claim and by a method according to the subordinate method claim by determining the transmission properties of the windshield at at least two different wavelengths and comparing them with known reference values.
- Fig. 1 is a sectional view of the device according to the invention.
- Fig. 2 transmission characteristics of a clear glass and a thermal insulation glass pane
- the device according to the invention comprises a radiation guide body 2, which is optically coupled to the inside of the windshield 1 by means of a transparent intermediate layer 5, which is designed, for example, as a self-adhesive flexible film.
- a radiation transmitter 4 and a radiation receiver 3 are assigned to this radiation guide body 2 and are attached to a printed circuit board 6 as SMD components.
- At least a part of the radiation beam emitted by the radiation transmitter 4 is parallelized by the radiation guide body 2 and coupled into the windshield 1 at such a flat angle that a total reflection of the radiation takes place on the outside of the window 1 even when it is wetted with moisture.
- the totally reflected radiation beam is coupled out of the pane again by the radiation guide body 2 and focused on the radiation receiver 3.
- a component of the same type is preferably used as the radiation receiver 3, as is also used in an ambient or pre-light sensor of the light sensor system assigned to the automatic control device for switching on and off lighting devices. Under certain circumstances, it is even possible to use such an existing sensor instead of an additional radiation receiver 3 if a correspondingly configured radiation guide body 2 can be integrated into the existing light sensor system.
- Reference values compared. The result of this comparison is used to either directly influence the operating parameters of the automatic control device and, in particular, the light sensor system assigned to them, or to indirectly influence these operating parameters via the intermediate step of identifying the respective ones
- the reference values of the light intensities I 1, I 2 , 1 3 used for comparison and stored in the memory module are preferably determined in the course of a final functional check provided in the manufacturing process of the control device by means of a reference measurement to be carried out, for example, on a clear glass pane. This has the advantage over the use of predefined reference values that are the same for all individual specimens that the influence of the occasionally large scattering that optoelectronic transmitter and receiver modules have with regard to their intensity yield or their sensitivity is largely eliminated by this procedure. Fig.
- the presence of a rain sensor - in particular if it is integrated in a structural unit with the light sensor system - offers the possibility of completely dispensing with a separate radiation guide body for the device according to the invention and to use the existing radiation guide body of the rain sensor.
- the beam path is designed such that when the pane is wetted with moisture, the total reflection is disturbed, but in the case of a dry pane, use in the sense of the present invention is readily possible.
- a preferred embodiment provides, for example, a plurality of rain sensor sections, each with light-emitting diodes with a different one To provide a combination of wavelengths, for example a section “infrared and red”, a further section “infrared and green” and a third section “infrared and blue”.
- another variant provides that one of, for example, a total of four rain sensor paths works with visible light instead of infrared radiation and, in a preferred development of this variant, with an RGB -Light diode and a matching receiver.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10033609 | 2000-07-11 | ||
DE10033609A DE10033609A1 (en) | 2000-07-11 | 2000-07-11 | Device and method for automatically adapting a light sensor system to a windshield |
PCT/EP2001/007880 WO2002004248A1 (en) | 2000-07-11 | 2001-07-09 | Device and method for automatically adapting a light sensor to a windscreen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1210248A1 true EP1210248A1 (en) | 2002-06-05 |
EP1210248B1 EP1210248B1 (en) | 2007-02-28 |
Family
ID=7648507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01949479A Expired - Lifetime EP1210248B1 (en) | 2000-07-11 | 2001-07-09 | Device and method for automatically adapting a light sensor to a windscreen |
Country Status (6)
Country | Link |
---|---|
US (1) | US6559466B2 (en) |
EP (1) | EP1210248B1 (en) |
JP (1) | JP4681206B2 (en) |
AU (1) | AU2001270622A1 (en) |
DE (2) | DE10033609A1 (en) |
WO (1) | WO2002004248A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10219690A1 (en) * | 2002-05-02 | 2003-11-27 | Ralf Spillecke | Sensor element for the detection of condensation |
JP2005233728A (en) * | 2004-02-18 | 2005-09-02 | Denso Corp | Photosensor device |
US20100155584A1 (en) * | 2006-09-13 | 2010-06-24 | Bernd Mack | Sensor for detecting dirt and/or rain and method for operating a sensor |
DE102006044792A1 (en) * | 2006-09-13 | 2008-03-27 | Schefenacker Vision Systems Germany Gmbh | Sensor for detecting dirt and / or rain and method for operating a sensor |
DE102008060015A1 (en) * | 2008-12-03 | 2010-06-10 | GM Global Technology Operations, Inc., Detroit | Device for window heating, heated pane |
US10461743B2 (en) * | 2013-01-11 | 2019-10-29 | Imagesurge, Inc. | Interactive display system and method for use with low emissivity glass using infrared illumination |
AU2014205055A1 (en) * | 2013-01-14 | 2015-08-27 | Imagesurge, Inc. | Interactive display system and method for use with low emissivity glass using infrared illumination |
CN105841020A (en) * | 2015-01-13 | 2016-08-10 | 深圳市宝泰光电科技有限公司 | Intelligent control lamp |
KR101856937B1 (en) | 2016-10-14 | 2018-06-19 | 현대자동차주식회사 | Rain sensor of vehicle, and method of controlling the same |
MX2021010054A (en) * | 2019-02-20 | 2021-09-21 | Saint Gobain | Composite pane with an integrated light sensor. |
US20230400560A1 (en) * | 2022-06-13 | 2023-12-14 | Datalogic IP Tech, S.r.l. | Dynamic utilization of broad-spectrum photosensor |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5889430A (en) * | 1981-11-25 | 1983-05-27 | Nippon Denso Co Ltd | Wiper and illuminator control |
DE3532199A1 (en) * | 1985-09-10 | 1987-03-12 | Lorenz Dr Twisselmann | Sensor for controlling the visual clarity of panes of glass |
DE3715798A1 (en) * | 1987-05-12 | 1988-01-07 | Erich Ing Grad Huber | Optoelectronic device for detecting the polluting (fouling) of transparent protective panes and initiating the cleaning measures |
US4973844A (en) * | 1989-07-10 | 1990-11-27 | Donnelly Corporation | Vehicular moisture sensor and mounting apparatus therefor |
DE19523262A1 (en) | 1995-06-27 | 1997-01-02 | Bosch Gmbh Robert | Automatic switching device for automobile lights |
DE19713910C1 (en) * | 1997-04-04 | 1998-07-30 | Kostal Leopold Gmbh & Co Kg | Optoelectronic sensor arrangement to measure precipitation on car windscreen, etc. |
DE19861428B4 (en) * | 1998-03-17 | 2008-01-10 | Robert Bosch Gmbh | Optical sensor |
JP2000065726A (en) * | 1998-08-21 | 2000-03-03 | Nippon Sheet Glass Co Ltd | Droplet detection method and device therefor |
DE50005571D1 (en) * | 1999-07-17 | 2004-04-08 | Bosch Gmbh Robert | LIGHT SENSITIVE SENSOR UNIT, IN PARTICULAR FOR THE AUTOMATIC SWITCHING OF LIGHTING DEVICES |
-
2000
- 2000-07-11 DE DE10033609A patent/DE10033609A1/en not_active Ceased
-
2001
- 2001-07-09 AU AU2001270622A patent/AU2001270622A1/en not_active Abandoned
- 2001-07-09 EP EP01949479A patent/EP1210248B1/en not_active Expired - Lifetime
- 2001-07-09 WO PCT/EP2001/007880 patent/WO2002004248A1/en active IP Right Grant
- 2001-07-09 JP JP2002508931A patent/JP4681206B2/en not_active Expired - Fee Related
- 2001-07-09 DE DE50112110T patent/DE50112110D1/en not_active Expired - Lifetime
-
2002
- 2002-03-11 US US10/094,681 patent/US6559466B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO0204248A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2004531418A (en) | 2004-10-14 |
AU2001270622A1 (en) | 2002-01-21 |
DE50112110D1 (en) | 2007-04-12 |
WO2002004248A1 (en) | 2002-01-17 |
US6559466B2 (en) | 2003-05-06 |
DE10033609A1 (en) | 2002-01-24 |
EP1210248B1 (en) | 2007-02-28 |
JP4681206B2 (en) | 2011-05-11 |
US20020117606A1 (en) | 2002-08-29 |
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